The American Lock No. A2010 Hidden Shackle Padlock features a 2-7/8in (73mm) wide case hardened solid steel lockbody to withstand forcible attacks. Padlock features a front-access keyway with anti-drill cylinder plate for maximum security. The 6-pin tumbler, rekeyable cylinder provides superior pick resistance and tens of thousands of key changes. Flat back design is tapped and threaded to allow for attachment to American Lock high security hasps A801 or A802.